C5218-EH C5218-1/2H铜合金冲压加工
Cu Zn40 Pb German standard / DIN 17660, Kupfer-Zinn (Messinge) SS 5163, ingen tillg nglighet
Cu Zn40 Pb2 German standard / DIN 17660, Kupfer-Zinn (Messinge) SS 5168, ingen tillg nglighet
Cu Sn4 German standard / DIN 17662, Zinnbronzen Cu Sn4
LM’s comparison list between different
norms from Copper alloys
采用传统Tafel 拟合计算得出腐蚀速率。与未微合金化的锰黄铜相比,锆微合金化的锰黄铜腐蚀速率降低了74.5%,说明其电化学耐蚀性更好。
摩擦磨损性能
通过锰黄铜在室温下的湿摩擦系数随磨损时间变化曲线可以看出,未合金化和锆微合金化的湿摩擦系数变动幅度均较小,都有较优的耐磨性能。但是锆微合金化的锰黄铜具有更低的平均摩擦系数(0.0254),与未合金化的锰黄铜(0.0315)相比降低了19.3%。
通过锰黄铜的磨痕形貌可以看出,摩擦后的表面特征有如下几点:
①沿滑动方向上存在着明显的犁沟,犁沟深且多;
②犁沟旁边均出现了部分承载面。说明该区域在摩擦力的作用下发生了塑性变形,但没有发现裂纹,表明无脆性断裂现象 [3] 。
力学性能
通过铸态锰黄铜的拉伸性能可以看出,微量元素锆的加入,使锰黄铜的抗拉强度提高5.5%,屈服强度提高了24.2%,但是伸长率降低了6.5%。这是由于锆在锰黄铜中起到细晶强化的作用,而位错增强导致了合金塑性降低,伸长率也会相应的减小。
Please read below on the wished for trade-name in the left hand column, and get it translated into LM-language on the right-hand
column. The right hand column with our name is either identical in composition or a fully replaceable alloy with only minor differences.
The column in the middle states the norm and its country of origin.
With no marks in front of LM’s alloy = alloy is identical, with this sign “~” = alloy is very similar, fully replaceable.